by Catalina Camia, USA TODAY

by Catalina Camia, USA TODAY

Former Texas congressman Ron Paul's advice to his son, Rand, about running for president isn't just fatherly guidance.

The three-time presidential candidate speaks from experience when he says the Republican senator from Kentucky should be careful about what wishes for.

"I kiddingly say the advice I give him (is) he better be very careful," the elder Paul told CNN's Jake Tapper. "He's doing well, he might get elected and that's a great burden and a major responsibility."

Ron Paul, who retired from the U.S. House earlier this year, said during his interview that aired Monday his son "probably" will end up running for president in 2016 because "he's been on TV hinting that he very well might." The senator's visits to key presidential primary states such as Iowa, New Hampshire and South Carolina are also another hint.

The younger Paul has said he won't make a decision before 2014 on a White House bid.